Grooved refractory pouring tube for metallurgical casting, assembly of refractory components, casting installation and process for repairing the surface of a refractory component

Abstract

The object of the present invention is a refractory pouring tube including a contact face ( 15 ) capable of bearing against a contact face ( 11 ) of another refractory component ( 9 ), the said pouring tube being arranged to be displaced. The said pouring tube is characterised by the fact that its contact face ( 15 ) incorporates a cleaning groove ( 26, 27 ) delineated notably by a wall presenting an edge capable of exerting a scraping action, as the said pouring tube is displaced, at least partially on the determinate part of the contact face of the other refractory component. The cleaning groove makes it possible to preserve the integrity of the contact surface of the other refractory component and, consequently, the joint surface formed between the two components.

What is claimed is:  
     
       1. A refractory pouring tube defining a first portion of a pouring channel and comprising a first contact face adapted to be displaced relative to a second contact face of a second refractory component defining an adjacent portion of the pouring channel, whereby displacement comprises sliding the first contact face relative to while maintaining bearing contact against the second contact face and the first and second refractory components define an injection groove substantially encircling the pouring channel and having a determinate part behind the pouring channel relative to the displacement, the first contact face comprises a cleaning groove and a second groove, the cleaning groove presenting an edge adapted to scrape the second contact face as the pouring tube is displaced, the second groove is essentially parallel to the cleaning groove, and the second groove and the cleaning groove are on opposite sides of the pouring channel. 
     
     
       2. The refractory pouring tube of  claim 1 , wherein the cleaning groove is adapted to scrape the determinate part. 
     
     
       3. The refractory pouring tube of  claim 1 , wherein the pouring tube comprises a submerged entry nozzle. 
     
     
       4. The refractory pouring tube of  claim 1 , wherein the cleaning groove comprises a blind passageway. 
     
     
       5. A refractory pouring tube defining a first portion of a pouring channel and comprising a first contact face adapted to be displaced relative to a second contact face of a second refractory component defining an adjacent portion of the pouring channel, whereby displacement comprises sliding the first contact face relative to while maintaining bearing contact against the second contact face and the first and second refractory components define an injection groove substantially encircling the pouring channel and having a determinate part behind the pouring channel relative to the displacement, the first contact face comprises a cleaning groove and a second groove, the cleaning groove presenting an edge adapted to scrape the second contact face as the pouring tube is displaced, the second groove is essentially parallel to the cleaning groove and the second groove and the cleaning groove are symmetrical relative to the pouring channel. 
     
     
       6. The refractory pouring tube of  claim 1 , wherein the second groove is adapted to at least partially cover the injection groove, thereby forming an injection channel. 
     
     
       7. The refractory pouring tube of  claim 1 , wherein the injection groove includes an opening, and the second groove is adapted to cover the opening. 
     
     
       8. The refractory pouring tube of  claim 1 , wherein the pouring tube comprises a plurality of cleaning grooves.